Annual Summary of Disease Activity:
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Viral Hepatitis A, 2010
In 2010, 37 cases of hepatitis A (HAV) (0.7 per 100,000 population) were reported. Thirteen (35%) cases were residents of the metropolitan area, including 9 residents of Hennepin or Ramsey Counties. Nineteen (51%) cases were female. Cases ranged in age from 3 to 74 years (median, 38 years). Twenty-three (62%) were white, 1 (3%) was black, 1 (3%) was American Indian, and 1 (3%) was Asian; race was unknown for 11 (30%) cases. Hispanic ethnicity was reported for 3 cases.
A risk factor was identified for 21 (57%) of the 37 cases, 7 of whom had known exposure to a confirmed hepatitis A case. These persons became infected following exposure to a close contact, representing missed opportunities to administer immune globulin (IG) or HAV vaccine. Of the remaining 14 cases with a risk factor identified, 5 were associated with travel. Of these 5 cases, 1 traveled to a Central/South American country (Chile).
In 2010, there were three outbreaks of 3, 4, and 11 cases, respectively. Three cases from an unidentified source occurred in family members from Anoka and LeSueur Counties. An outbreak in a family who recently adopted a child from Haiti accounted for 4 cases. Eleven cases were associated with an outbreak in Cottonwood County with no identified source (this outbreak was ongoing into 2011 with additional cases).
- For up to date information see>> Hepatitis A
- Full issue>> Annual Summary of Communicable Diseases Reported to the Minnesota Department of Health, 2010